package com.atguigu.ware.service.impl;

import com.atguigu.common.constant.WareConstant;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.ware.dao.PurchaseDao;
import com.atguigu.ware.entity.PurchaseDetailEntity;
import com.atguigu.ware.entity.PurchaseEntity;
import com.atguigu.ware.service.PurchaseDetailService;
import com.atguigu.ware.service.PurchaseService;
import com.atguigu.ware.service.WareSkuService;
import com.atguigu.ware.vo.MergeVo;
import com.atguigu.ware.vo.PurchaseDoneVo;
import com.atguigu.ware.vo.PurchaseItemDoneVo;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;


@Service("purchaseService")
public class PurchaseServiceImpl extends ServiceImpl<PurchaseDao, PurchaseEntity> implements PurchaseService {

  @Resource
  PurchaseDetailService detailService;

  @Resource
  WareSkuService wareSkuService;

  @Override
  public PageUtils queryPage(Map<String, Object> params) {
    IPage<PurchaseEntity> page = this.page(
      new Query<PurchaseEntity>().getPage(params),
      new QueryWrapper<PurchaseEntity>()
    );

    return new PageUtils(page);
  }

  @Override
  public PageUtils queryPageUnreceivePurchase(Map<String, Object> params) {
    IPage<PurchaseEntity> page = this.page(
      new Query<PurchaseEntity>().getPage(params),
      new QueryWrapper<PurchaseEntity>().eq("status", 0).or().eq("status", 1)
    );

    return new PageUtils(page);
  }

  @Transactional
  @Override
  public void mergePurchase(MergeVo mergeVo) {
    Long purchaseId = mergeVo.getPurchaseId();
    if (purchaseId == null) {
      //1、新建一个
      PurchaseEntity purchaseEntity = new PurchaseEntity();

      purchaseEntity.setStatus(WareConstant.PurchaseStatusEnum.CREATED.getCode());
      purchaseEntity.setCreateTime(new Date());
      purchaseEntity.setUpdateTime(new Date());
      this.save(purchaseEntity);
      purchaseId = purchaseEntity.getId();
    }

    //TODO 确认采购单状态是0,1才可以合并

    List<Long> items = mergeVo.getItems();
    Long finalPurchaseId = purchaseId;
    List<PurchaseDetailEntity> collect = items.stream().map(i -> {
      PurchaseDetailEntity detailEntity = new PurchaseDetailEntity();

      detailEntity.setId(i);
      detailEntity.setPurchaseId(finalPurchaseId);
      detailEntity.setStatus(WareConstant.PurchaseDetailStatusEnum.ASSIGNED.getCode());
      return detailEntity;
    }).collect(Collectors.toList());


    detailService.updateBatchById(collect);

    PurchaseEntity purchaseEntity = new PurchaseEntity();
    purchaseEntity.setId(purchaseId);
    purchaseEntity.setUpdateTime(new Date());
    this.updateById(purchaseEntity);
  }

  /**
   * @param ids 采购单id
   */
  @Override
  public void received(List<Long> ids) {
    //1、确认当前采购单是新建或者已分配状态
    List<PurchaseEntity> collect = ids.stream().map(id -> {
      PurchaseEntity byId = this.getById(id);
      return byId;
    }).filter(item -> {
      if (item.getStatus() == WareConstant.PurchaseStatusEnum.CREATED.getCode() ||
        item.getStatus() == WareConstant.PurchaseStatusEnum.ASSIGNED.getCode()) {
        return true;
      }
      return false;
    }).map(item -> {
      item.setStatus(WareConstant.PurchaseStatusEnum.RECEIVE.getCode());
      item.setUpdateTime(new Date());
      return item;
    }).collect(Collectors.toList());

    //2、改变采购单的状态
    this.updateBatchById(collect);


    //3、改变采购项的状态
    collect.forEach((item) -> {
      List<PurchaseDetailEntity> entities = detailService.listDetailByPurchaseId(item.getId());
      List<PurchaseDetailEntity> detailEntities = entities.stream().map(entity -> {
        PurchaseDetailEntity entity1 = new PurchaseDetailEntity();
        entity1.setId(entity.getId());
        entity1.setStatus(WareConstant.PurchaseDetailStatusEnum.BUYING.getCode());
        return entity1;
      }).collect(Collectors.toList());
      detailService.updateBatchById(detailEntities);
    });
  }

  @Transactional
  @Override
  public void done(PurchaseDoneVo doneVo) {

    Long id = doneVo.getId();


    //2、改变采购项的状态
    Boolean flag = true;
    List<PurchaseItemDoneVo> items = doneVo.getItems();

    List<PurchaseDetailEntity> updates = new ArrayList<>();
    for (PurchaseItemDoneVo item : items) {
      PurchaseDetailEntity detailEntity = new PurchaseDetailEntity();
      if (item.getStatus() == WareConstant.PurchaseDetailStatusEnum.HASERROR.getCode()) {
        flag = false;
        detailEntity.setStatus(item.getStatus());
      } else {
        detailEntity.setStatus(WareConstant.PurchaseDetailStatusEnum.FINISH.getCode());
        ////3、将成功采购的进行入库
        PurchaseDetailEntity entity = detailService.getById(item.getItemId());
        wareSkuService.addStock(entity.getSkuId(), entity.getWareId(), entity.getSkuNum());

      }
      detailEntity.setId(item.getItemId());
      updates.add(detailEntity);
    }

    detailService.updateBatchById(updates);

    //1、改变采购单状态
    PurchaseEntity purchaseEntity = new PurchaseEntity();
    purchaseEntity.setId(id);
    purchaseEntity.setStatus(flag ? WareConstant.PurchaseStatusEnum.FINISH.getCode() : WareConstant.PurchaseStatusEnum.HASERROR.getCode());
    purchaseEntity.setUpdateTime(new Date());
    this.updateById(purchaseEntity);


  }

}
